20012960

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{83}}^1\times {\mathrm{137}}^1$

素因数の和:246

約数の個数: 96

約数和(自身を含む): 52581312

約数和(自身を除く): 32568352

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 83, 88, 110, 137, 160, 166, 176, 220, 274, 332, 352, 415, 440, 548, 664, 685, 830, 880, 913, 1096, 1328, 1370, 1507, 1660, 1760, 1826, 2192, 2656, 2740, 3014, 3320, 3652, 4384, 4565, 5480, 6028, 6640, 7304, 7535, 9130, 10960, 11371, 12056, 13280, 14608, 15070, 18260, 21920, 22742, 24112, 29216, 30140, 36520, 45484, 48224, 56855, 60280, 73040, 90968, 113710, 120560, 125081, 146080, 181936, 227420, 241120, 250162, 363872, 454840, 500324, 625405, 909680, 1000648, 1250810, 1819360, 2001296, 2501620, 4002592, 5003240, 10006480, 20012960]

約数ペア:

[(1, 20012960), (2, 10006480), (4, 5003240), (5, 4002592), (8, 2501620), (10, 2001296), (11, 1819360), (16, 1250810), (20, 1000648), (22, 909680), (32, 625405), (40, 500324), (44, 454840), (55, 363872), (80, 250162), (83, 241120), (88, 227420), (110, 181936), (137, 146080), (160, 125081), (166, 120560), (176, 113710), (220, 90968), (274, 73040), (332, 60280), (352, 56855), (415, 48224), (440, 45484), (548, 36520), (664, 30140), (685, 29216), (830, 24112), (880, 22742), (913, 21920), (1096, 18260), (1328, 15070), (1370, 14608), (1507, 13280), (1660, 12056), (1760, 11371), (1826, 10960), (2192, 9130), (2656, 7535), (2740, 7304), (3014, 6640), (3320, 6028), (3652, 5480), (4384, 4565)]